WPF set attached event programatically

Question

Can someone explain how you do this programatically in WPF?

<window Validation.Error="ItemError"></Window>

I am trying to set the attached event for Validation.Error through code, but cannot quite figure out how to do it.

Answer 1

You use Validation.AddErrorHandler to do this:

Validation.AddErrorHandler(this, this.ItemError);